#VU14186 Out-of-bounds read in Linux kernel - CVE-2018-14610
Published: August 3, 2018
Vulnerability identifier: #VU14186
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear
CVE-ID: CVE-2018-14610
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local attacker to cause DoS condition on the target system.
The vulnerability exists in the write_extent_buffer() function due to insufficient verification that each block group has a corresponding chunk at mount time in the btrfs_read_block_groups()function, as defined in fs/btrfs/extent-tree.c source code file. A local attacker can mount and operate a Btrfs filesystem image that submits malicious input, trigger an out-of-bounds read in the write_extent_buffer() function and cause the service to crash.
Remediation
Install update from vendor's website.